Hepatitis b cure hope fades as early trial ends
NCT ID NCT05345990
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This small phase 2 trial tested whether giving hepatitis B antibodies (HBIG) could clear the hepatitis B surface antigen in people with chronic hepatitis B. Only 13 patients were enrolled before the study was terminated. The goal was to see if a 12-week course of injections could make the virus undetectable, potentially reducing the need for long-term medication.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Hepatitis B immunoglobulins (Hepatect and Zutectra)
- What this could lead to
- If successful, this could point toward a way to clear the hepatitis B surface antigen, potentially reducing the need for lifelong antiviral medication.
- What could go wrong
- This was a very small, early-phase pilot study with only 13 participants, and it was terminated early. The treatment involves frequent injections and may not work for everyone.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
13 people
The number who actually took part.
- Started
-
Aug 2022
- Finished
-
Jul 2025
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Subjects must meet all of the following inclusion criteria to be eligible for participation in this study: 1. Willing and able to provide written informed consent 2. Male or female, age ≥ 18 years 3. Confirmation of chronic HBV infection documented by: positive HBsAg at least 12 months before screening 4. Cohort A: NA treatment for at least 12 months before screening. HBV-DNA should be below the lower limit of detection at screening. HBsAg positive and \<100 IU/ml. HBeAg negative. 5. Cohort B: Untreated with NAs for at least 12 months before screening. HBV-DNA \< 2000 IU/ml. HBsAg positive and \< 100 IU/ml. HBeAg-negative. 6. Subject has not been treated with any investigational drug or device within 42 days before the screening visit or within 5 half-lives for investigational drugs, whichever is longer. 7. Transient Elastography (FibroScan) \< 7.5 kPa at screening. 8. ALT levels \< 1.5 times of upper the limit of normal at screening for both cohorts 9. Body mass idex (BMI) \> 18kg/m² 10. A negative serum pregnancy test is required for female subjects (unless surgically sterile or women \> 54 years of age with cessation for \> 24 months of previously occurring menses). Complete abstinence from intercourse. Periodic abstinence (e.g., calendar, ovulation, symptothermal, postovulation methods) is not permitted. Or Consistent and correct use of 1 of the following methods of birth control listed below, in addition to a male partner who correctly uses a condom, from the date of Screening until the end of FU: * intrauterine device (IUD) with a failure rate of \< 1% per year * bilateral tubal sterilization * vasectomy in male partner * hormone-containing contraceptive: * combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation: * oral * intravaginal * transdermal * progestogen-only hormonal contraception associated with inhibition of ovulation: * oral * injectable * implantable 11. Subject must be able to comply with the dosing instructions for study drug administration and be able to complete the study schedule of assessments Exclusion Criteria: Subjects who meet any of the following exclusion criteria are not to be enrolled in this study: 1. Clinically significant illness (other than hepatitis B) or any other major medical disorder that, in the opinion of the investigator, may interfere with subject treatment, assessment or compliance with the protocol. Subjects currently under evaluation for a potentially clinically significant illness (other than hepatitis B) are also excluded. 2. Co-infection with hepatitis C virus (defined as HCV RNA positive. HCV RNA negative/anti-HCV-positive patients can be included) or co-infection with HIV. 3. Clinical hepatic decompensation (i.e. clinical ascites, encephalopathy or variceal hemorrhage). 4. Psychiatric hospitalization, suicide attempt, and/or a period of disability as a result of their psychiatric illness within the last 2 years. Subjects with psychiatric illness that is well-controlled on a stable treatment regimen for at least 12 months prior to screening or has not required medication in the last 12 months may be included. 5. Significant drug allergy (such as anaphylaxis or hepatotoxicity). 6. Pregnant or nursing female or male with pregnant female partner 7. Clinically relevant drug or alcohol abuse within 12 months of screening including any uncontrolled drug use within 6 months of screening. A positive drug screen will exclude subjects unless it can be explained by a prescribed medication. The investigator must approve medication, the diagnosis and prescription. Uncontrolled users of intravenous drugs will not be permitted to enroll in the study. 8. live-attenuated virus vaccinations such as: measles, mumps, rubella and varicella 4 weeks before and up to three months after administration of hepatitis B immunoglobulins. If not required by an emergency situation, passive or active immunizations or administration of plasma preparations or of other immunoglobulins is not allowed during the study 9. A recent SARS-COV2 infection in the last 4 weeks prior to screening
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Hannover Medical School, Department for Gastroenterology, Hepatology and Endocrinology
Hanover, Lower Saxony, 30625, Germany
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